TokenSpeed Module Applications
Replacing a Source Route Bridge or Router
Figure 2-4 shows a network in which a Centillion switch replaces three source route bridges.
Backbone ring
RI RO
Backbone hub 1 Backbone hub 2
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| Centillion 100 |
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Bridge | Bridge |
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| Bridge | token ring | ||||||||||||||
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| switch | |||||||||||||||||
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RI RO
User rings
Before
User rings
After
7568EA
Figure 2-4. Replacing a source route bridge or router
Concentrating Rings into a Router
To concentrate rings into a router, make sure virtual rings in the network are set up in one of the following two ways:
•To segment a congested ring without using new router ports, be sure that all stations previously connected to a single router port are in the same virtual ring (refer to Using SpeedView 2.1 for Windows). The router will continue to view the network the same way it did before the rings were segmented.
•To concentrate multiple, small ring segments into a router subnet and to free router ports, be sure all segments are in the same virtual ring so that you can group the entire virtual ring into a single router port. Be sure that the number of devices in the virtual ring does not exceed the subnet size defined on the router.
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